5GAO Yang 1 ,XU SiPeng 2 &ZHAO BaoSheng 3 1College of Science,China Agricultural University,Beijing 100083,China,2College of Engineering,Ocean University of China,Qingdao 266071,China,3 School of Mechanical Engineering,University of Science and Technology of Liaoning,Anshan 114044,China.Mixed boundary conditions for piezoelectric plates[J].Science China(Physics,Mechanics & Astronomy),2009,52(5):755-761.